Polymer electrolyte membrane fuel cells and stacks with adhesively bonded layers
March 26, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFuel cell pack with internal connection of fuel cells Integral gas seal for fuel cell gas distribution assemblies and method of fabrication Fuel cell Method of fabricating an integral gas seal for fuel cell gas distribution assemblies Composite graphite separator plate for fuel cell stack Seal structure for an electrochemical cell Electrode substrate with integral edge seal and method of forming the same Electroconductive integrated substrate and process for producing the same Fuel cell membrane electrode and seal assembly Unitized fuel cell structure InventorsAssigneeApplicationNo. 048817 filed on 03/26/1998US Classes:429/35, Having sealing feature429/30, Solid electrolyte429/34Housing member, seal, spacer or fluid distributing or directing meansExaminersPrimary: Nuzzolillo, MariaAssistant: Wills, Monique Attorney, Agent or FirmForeign Patent References
International ClassH01M 008/10AbstractAn electrochemical cell stack comprises a plurality of membrane electrode assemblies interposed between pairs of separator plates. The stack comprises adhesively bonded layers. Preferably each membrane electrode assembly is adhesively bonded to the adjacent pair of separator plates. The adhesive bond between the plate and membrane electrode assembly preferably provides a substantially gas and liquid-tight seal around the perimeter of the electrochemically active area of the membrane electrode assembly and around any fluid manifold openings formed therein. Alternatively, or in addition, adjoining pairs of separator plates in an electrochemical cell stack may be adhesively bonded together. Such pairs of adhesively bonded plates may define cooling spaces between neighboring cells. Stacks comprising a plurality of individual cell modules may be formed, each module comprising a membrane electrode assembly bonded to a pair of separator plates.Other References
Field of SearchSolid electrolyteHousing member, seal, spacer or fluid distributing or directing means Having sealing feature Having bonded seal, e.g., welded, adhesive, molded in situ, etc. Having electrolyte matrix or barrier layer Having an inorganic matrix, substrate or support Flat-type unit cell and specific unit cell components The electrolyte is solid Separator, retainer, spacer or materials for use therewith |
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